Frequently Asked Questions
All-terrain tires have a 215 mm width. Multiply the tire’s width (215 mm) with aspect ratio (0.55) to get the sidewall height (118.25 mm). Multiple the sidewall height by 2 (236.6 mm). Convert the rim diameter into mm, (431.8 mm). Calculate the total height by adding sidewall height and rim diameter. The total height is 26.31 inches (668.3 mm)
The alphanumerical code on the tire indicates the rim size. 15 55r17 snow tires have a rim diameter of 17 inches.